Amri, Nur Ali (2018) Tinjauan Matematis Kriging: Aplikasi pada Distribusi Kadar Emas. Jurnal Teknologi Pertambangan, 3 (2). pp. 201-206. ISSN 2442-4234
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Abstract
Geostatistika merupakan suatu metode dalam statistika spasial yang disajikan dalam fungsi matematika. Oleh karenanya, rumusan yang disajikan berasal dari jabaran matematika.Tulisan ini membahas jabaran matematik variogram dan teknik kriging, serta aplikasinya pada distribusi kadar emas dalam sistem vein. Berdasarkan parameter fitting variogram eskperimental robust serta OLS dan WLS basis eksponensial, dua kriging ordinari titik dan blok ukuran 5050 dilaksanakan. Rata-rata estimasi kriging titik kedua model menghasilkan nilai yang hampir sama. Demikian pun untuk estimasi kriging berdasarkan cara blok, meskipun kedua model menghasilkan nilai hampir sama, tetapi rata-rata estimasi blok secara umum adalah lebih kecil dibandingkan titik. Luas kawasan mengandung distribusi kadar tinggi untuk estimasi titik juga lebih besar dibandingkan dengan estimasi blok Kata kunci – Semivariogram, kriging ordinari titik-blok. Geostatistics is a spatial statistics method presented in mathematical functions. Therefore, the formula comes from mathematical explanation. This paper discusses mathematical variogram variations, kriging technique and its application on the gold grade distribution of vein system. Based on robust experimental variogram parameters within OLS-WLS exponential base, two ordinary kriging i.e. point and block size of 5050 are implemented. The mean point kriging estimation of both models yields almost gold grade value. Similarly, for the block kriging estimate base, although both models yield almost same value, the mean of block kriging produces, commonly, smaller area than point kriging technique. An area contains of high grade distribution based on point estimation also produces wider than block estimation area base. Keywords – Variogram, point-block ordinary kriging
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Geostatistics is a spatial statistics method presented in mathematical functions. Therefore, the formula comes from mathematical explanation. This paper discusses mathematical variogram variations, kriging technique and its application on the gold grade distribution of vein system. Based on robust experimental variogram parameters within OLS-WLS exponential base, two ordinary kriging i.e. point and block size of 5050 are implemented. The mean point kriging estimation of both models yields almost gold grade value. Similarly, for the block kriging estimate base, although both models yield almost same value, the mean of block kriging produces, commonly, smaller area than point kriging technique. An area contains of high grade distribution based on point estimation also produces wider than block estimation area base. Keywords – Variogram, point-block ordinary kriging – Variogram, point-block ordinary kriging. |
| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Dr. ST. MT Nur Ali Amri |
| Date Deposited: | 19 Nov 2021 12:11 |
| Last Modified: | 19 Nov 2021 12:11 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/27087 |
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